The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Sep. 24, 2002
Filed:
Aug. 30, 1999
Edward H. Ringness, Seattle, WA (US);
Microsoft Corporation, Redmond, WA (US);
Abstract
A method for color separating an image stored in an encapsulated POSTSCRIPT (EPS) file to be printed to a spot-color printing plate. The method is contained in a utility and referred to as “Encapsulated POSTCRIPT Color Separation” (ECS). The color separation of images in an EPS file is a two-step process. In the first step, the ECS utility determines whether the spot color appears in the electronic file. Typically, the named colors are listed in the document structuring convention (“DSC”) comments of the header portion of the electronic file. If the DSC comment section contains a named color, then the ECS utility sets a key color to the named color. However, if the DSC comment section does not contain a named color, then the ECS defines the key color with the spot color defined by the DTP application. The ECS utility creates customized versions of the POSTSCRIPT language operators that define the colors of each object, and sends these customized versions to the POSTSCRIPT printer. The customized operators determine whether the object color associated with the object is a tint of the key color, as defined in the first step. If the ECS utility determines that the object color is a tint of the key color, the object is mapped to the spot-color partition and knocked-out on the black partition. However, if the object color is not a tint of the key color, the object is knocked-out on the spot-color partition and mapped to the black plate.